When she hears that, she looks at him. Really looks at him and the tears she has been holding back start falling because she has to explain to him while he could still hear her (because she knew better than anyone that there was such a thing as being much too late). She had to explain, but even though there are so many things that she wants to say, all she can manage when she puts her hand over his and cries is, "I'm sorry. I'm sorry. I'm so sorry."